Mcclain is a distinctive boys' name in United States, ranking #4603 in 1997 with 14 recorded births. The name reached its all-time peak in 2022 with 21 births ranking #4799. Since 1996, the popularity has increased by 40.0%. In 1997, approximately 1 in every 134,649 boys born was named Mcclain. STABLE Recent data shows the name is currently stable.